'Disconnect' a managed host to vCenter Server: practical application?

The vSphere client offers the possibility to "unplug" a managed host to vCenter Server (right-click > disconnect).

I was wondering in what situations it would be used/useful? He influence the virtual machines running on the host? Is "reconnect" everything just like linking to the departure to a new host?

mudage

Here is what I use the button disconnect to:

I have an old vCenter 4 install with 10 ESXi 4.0 hosts, I now build a vCenter 5.5 system and need to migrate to this vCenter but I can't have all the time.

So, I hit the button disconnect and then add the ESXi 4.0 host in my new vCenter, then at my convenience I then host 4.0 on a host 5.5 vmotion.

I hope this makes sense to you.

Simon.

Tags: VMware

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